Question

    A right circular cylinder of height 12 cm is covered by

    a rectangular sheet of aluminum foil of size 12 cm × 31.4 cm. Calculate the volume of the cylinder.
    A 576.12 Correct Answer Incorrect Answer
    B 941.14 Correct Answer Incorrect Answer
    C 742.14 Correct Answer Incorrect Answer
    D 654.12 Correct Answer Incorrect Answer

    Solution

    if tin foil is covered then the curved surface area of cylinder is equal to the area of tin foil. Curved surface area = 16 ×22 H = 16cm Volume = (C.S.A)2 /4 π h = (12×31.4×12 ×31.4×7) /4×22×12 = 20705.16/22   =941.14cm3

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